/*
This file is part of the iText (R) project.
Copyright (c) 1998-2025 Apryse Group NV
Authors: Apryse Software.

This program is offered under a commercial and under the AGPL license.
For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.

AGPL licensing:
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/
using System;
using iText.Kernel.Geom;
using iText.Kernel.Pdf;
using iText.Kernel.Pdf.Canvas.Parser.Filter;
using iText.Kernel.Pdf.Canvas.Parser.Listener;
using iText.Test;

namespace iText.Kernel.Pdf.Canvas.Parser {
    [NUnit.Framework.Category("IntegrationTest")]
    public class FilteredTextEventListenerTest : ExtendedITextTest {
        private static readonly String sourceFolder = iText.Test.TestUtil.GetParentProjectDirectory(NUnit.Framework.TestContext
            .CurrentContext.TestDirectory) + "/resources/itext/kernel/parser/FilteredTextEventListenerTest/";

        [NUnit.Framework.Test]
        public virtual void TestRegion() {
            PdfDocument doc = new PdfDocument(new PdfReader(sourceFolder + "in.pdf"));
            float pageHeight = doc.GetPage(1).GetPageSize().GetHeight();
            Rectangle upperLeft = new Rectangle(0, (int)pageHeight - 30, 250, (int)pageHeight);
            NUnit.Framework.Assert.IsTrue(TextIsInRectangle(doc, "Upper Left", upperLeft));
            NUnit.Framework.Assert.IsFalse(TextIsInRectangle(doc, "Upper Right", upperLeft));
        }

        private bool TextIsInRectangle(PdfDocument doc, String text, Rectangle rect) {
            FilteredTextEventListener filterListener = new FilteredTextEventListener(new LocationTextExtractionStrategy
                (), new TextRegionEventFilter(rect));
            String extractedText = PdfTextExtractor.GetTextFromPage(doc.GetPage(1), filterListener);
            return extractedText.Equals(text);
        }
    }
}
